500 Internal Server Error after upgrading ubuntu from 20.04 to 22.04

Ispconfig control panel (v 3.2.9) stopped working after upgrading ubuntu from 20.04 to 22.04. I tried to debug ispconfig but there are not any record in log file (ispconfig.log).

I followed instructions here but I only get result such as

Set Lock: /usr/local/ispconfig/server/temp/.ispconfig_lock
finished server.php.

 

I tried to update ispconfig using ispconfig_update.sh but I got result "Unable to retrieve version file.root@server1:/home/....#"

I also checked error.log and I found errors like

.php-fcgi-starter: line 6: /usr/bin/php-cgi: No such file or directory
[Sun Dec 11 12:30:10.904566 2022] [fcgid:warn] [pid 1576] (104)Connection reset by peer: [client 192.168.0.148:54918] mod_fcgid: error reading data from FastCGI server
[Sun Dec 11 12:30:10.904604 2022] [core:error] [pid 1576] [client 192.168.0.148:54918] End of script output before headers: index.php

 

I'm not sure is it ok to run this command below but I can access now ispconfig control panel without error

apt-get -y install apache2 apache2-doc apache2-utils libapache2-mod-php php8.1 php8.1-common php8.1-gd php8.1-mysql php8.1-imap phpmyadmin php8.1-cli php8.1-cgi libapache2-mod-fcgid apache2-suexec-pristine php-pear libruby libapache2-mod-python php8.1-curl php8.1-intl php8.1-pspell php8.1-sqlite3 php8.1-tidy php8.1-xmlrpc php8.1-xsl memcached php-memcache php-imagick php8.1-zip php8.1-mbstring php-soap php8.1-soap php8.1-opcache php-apcu php8.1-fpm libapache2-reload-perl php8.1-xml php8.1-dev php8.1-redis

 

I didn't realise this would be a problem. I previously upgraded Ubuntu from 20.04 to 22.04 on a server with ISPConfig 3.2 installed. When I tried the same thing with ISPConfig 3.2.9 installed, ISPConfig fails to run.
Is there a solution to this?

 

Additionally, when I try to update with the 'ispconfig_update.sh --force' command, the script complains that the Curl and Multibyte modules are missing, and then fails.

 

Start with this: https://forum.howtoforge.com/threads/please-read-before-posting.58408/
For upgrading Ubuntu: https://www.howtoforge.com/ubuntu-20-04-to-22-04-upgrade/
https://www.howtoforge.com/update-the-ispconfig-perfect-server-from-ubuntu-20-04-to-ubuntu-22-04/

 

It works fine for me now. I had to do some steps...

step1
****************************
Set Permanent DNS Nameservers in Ubuntu and Debian
Next, open the /etc/resolvconf/resolv.conf.d/head configuration file.

$ sudo vi /etc/resolvconf/resolv.conf.d/head
and add the following lines in it:

nameserver 8.8.8.8
nameserver 8.8.4.4

Save the changes and restart the resolvconf.service and systemd-resolved or reboot the system.

$ sudo systemctl restart resolvconf.service
$ sudo systemctl restart systemd-resolved.service

Now when you check the /etc/resolv.conf file, the name server entries should be stored there permanently. Henceforth, you will not face any issues concerning name resolution on your system.

REBOOT!!!
CHECK
vi /etc/resolv.conf

step2
************************************
sudo apt update
sudo apt upgrade

apt-get -y install apache2 apache2-doc apache2-utils libapache2-mod-php php8.1 php8.1-common php8.1-gd php8.1-mysql php8.1-imap phpmyadmin php8.1-cli php8.1-cgi libapache2-mod-fcgid apache2-suexec-pristine php-pear libruby libapache2-mod-python php8.1-curl php8.1-intl php8.1-pspell php8.1-sqlite3 php8.1-tidy php8.1-xmlrpc php8.1-xsl memcached php-memcache php-imagick php8.1-zip php8.1-mbstring php-soap php8.1-soap php8.1-opcache php-apcu php8.1-fpm libapache2-reload-perl php8.1-xml php8.1-dev php8.1-redis php8.1-readline libonig5

step3
**************************************
Replace the current enabled PHP version with your version.

sudo a2dismod php7.4
sudo a2enmod php8.1

Restart Apache for the changes to take effect.

sudo systemctl restart apache2

step4
**************************************
ISPCONFIG -> TOOLS -> RESYNC -> ALL SERVICES

**************************************
ispconfig_update.sh --force

step5
**************************************
GRUB
Open your Terminal (CTRL+ALT+T) then type...

sudo vi /etc/default/grub
then add this line:

GRUB_DISABLE_OS_PROBER=false
to the grub configurations. Then in the terminal run...

sudo update-grub
then reboot.

step6
**************************************
Install Roundcube Webmail
To install Roundcube Webmail, run:

apt-get -y install roundcube roundcube-core roundcube-mysql roundcube-plugins roundcube-plugins-extra javascript-common libjs-jquery-mousewheel php-net-sieve

 

Thanks for sharing the steps.

I am still keeping my Ubuntu 20.04 for now until this May 2023 when 23.04 version is finalized and released where I hope to see Ubuntu 22.04 to become more stable and shortcomings in ISPConfig 3.2.9 are fixed and ISPConfig more stable version is released.